Re: Adding "quota user limit" using triggers - Mailing list pgsql-general

From John R Pierce
Subject Re: Adding "quota user limit" using triggers
Date
Msg-id 4DF06AAE.908@hogranch.com
Whole thread Raw
In response to Adding "quota user limit" using triggers  (Andrea Peri <aperi2007@gmail.com>)
List pgsql-general
On 06/08/11 11:14 PM, Andrea Peri wrote:
> Hi,
>
> Is possible the limit the size of an user  (quota user) as space
> allocated in a tablespace ?
>
> I don't find this option in the 9.0 version of PG,
> so I think it is not available.
>
> Perhaps it should be possible to simulate it using triggers.
>
> However before start to work on it , I like to have a confirm and if
> there is some documentation or information on this
> problem available.

what exactly would this limit?

The total size of tables created by that user regardless of what role
inserted data into said tables?     There's really no way to track the
data written by a user into tables that multiple users have
insert/update privs to.     and does it include older tuple versions
that aren't yet vacuumed?

calculating pg_total_relation_size is fairly expensive, too, it requires
scanning the table and ancilliary items (indexes, toast storage) to sum
up the number of blocks allocated.




--
john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast


pgsql-general by date:

Previous
From: Andrea Peri
Date:
Subject: Adding "quota user limit" using triggers
Next
From: Clemens Schwaighofer
Date:
Subject: plpgsql function with update and seeing changed data from outside during run